Watchman&#39;s time-detector



P. MOOSMANN.

WATCHMANS TIME DETECTOR.

APPLICATION FILED JUNE 1, 1916.

1 35 1 ,056, Patented Aug. 31, 1920.

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WATCHMANS TIME DETECTOR.

APPLIICATION FILED lUNE I, 1916.

1,351,056. Patented A g 31,1920.

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WAT.CHMANS TIME DETECTOR.

- APPLICATION FILED JUNE 1, ms.

Patented Aug. 31, 1920.

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PATENT orrlce.

PAUL MOOSMANN, 0F BROOKLYN, NEW YORK.

WATCHMANS TIME-DETECTOR.

Specification of Letters Patent.

Patented Aug. 31, 1920.

Application filed June 1, 1916. Serial No. 101,015.

To all whom it may concern.-

Be it known that I, PAUL MOOSMANN, a citizen of the Empire of Germany, residing at 780 New York avenue. Brooklyn, borough of Brooklyn, in the State of New York, have invented certain new and useful Improvements in \Vatchmens Time-Detectors, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates to means for actuating a lock, especially such as are used in watchmens time detectors to control the movement of a marking device.

In watchmens time detectors marking devices of various'kinds have been used to mark a record upon a clock-driven dial or strip, and it has been customary to operate the look by a number of diverse keys supplied at different stations within or outside of a building to be visited by the watchman at different hours in his regular rounds.

It has been found possible in many cases for a watchman to copy or make substitutes.

for the keys at different stations so that he may operate the detector and make a record therein at the given time without visiting the station; and the possibility of using such a spurious key renders such time-detectors unreliable as a means of checking the Watchman.

The object of this invention is to provide a safety attachment that will prevent the watchman. from using any but the keys provided, the attachment being applicable to any specially constructed detector or to such detectors as are already upon the market. many of which have been condemned by iire-umlerwriters as unreliable, but will be made reliable by my attachment.

To apply and remove the dial or strip upon which the record is made in a timedetector, it is necessary to constructthe detector with a casing and a lid or cover locked thereto, and the attachment is also applicable to the lock and key by which such cover is secured; and also to looks em ployed in other connections.

The invention includes a lock in which a barrel-key is used and provided with an engaging member Within its barrel, and the lock is provided with a stop or carriage to offset the rotation of the key, and with means to engage a member within the barrel-key to move the stop out of the path of the key-ward or bit.

This construction renders it almost impossible for a watchman to ascertain in what manner the key performs its locking operation, or for him to easily make a copy or duplicate of the key.

The invention will be understood by reference to the annexed drznving in which the attachment is shown applied to several timedetoctors of different makes.

Figures 1 to '7 show the Moosmann time detector.

Fig. 1 is a plan of a time-detector with the cover of the casing open, and the detector provided with a single spring finger movable within the lock to prick the recordsheet at different points. 4

Fig. 2 is a cross section on line 2-2 in Fig. 1, viewed in the direction of the arrow 00.

Fig. 3 is a section on line 3-3 in Fig. 1.

Fig. 4 is a view similar to Fig. 3 with the parts in a different position.

Fig. 5 is asection on line 55' in Fig. 1, viewed in the direction of the arrow 2.

F 6 is a view similar to Fig. 5 with the parts in a different position.

Fig. 7 is a side view of the key for such detector with a portion broken away to show the interior.

Figs. 8 to 11 show the Hahn detector; Fig. 8 being a plan of the detector with a portion of the cover broken away to show the marking mechanism.

In this detector a plurality of springarms is provided for stamping a series of numbers on a clock-driven dial.

Fig. 8 is a view of the keybox upon the casing.

Fig. 9 is an edge view of the detector with a portion broken away to show a section of the marking mechanism on line 9-4) in Fig. 8.

Fig. 10 is a section of the marking mechanism shown in Fig. 9 with the marking arms unlocked.

Fig. 11 is a view similar to Fig. 10 but showing the opposite side with the markingarms locked.

Fig. 12 is a side-view of the key used in this detector.

Fig. 13 is a cross section of the lock in one side of the casing, which lock is employedto secure the cover upon the casing,

the section being taken on line 13-43 in Fig. 1 1.

Fig. 14: is an elevation of one side of the lock and lock-plate removed from the casing.

Fig. 15 is an elevation of the opposite side of the lock-plate.

Fig. 16 is a plan of the Burk detector with the cover removed and the lower half broken away. in this detector a strip of paper is applied to the periphery of a clockdriven wheel and the record marked thereon by the use of the key.

Fig. 17 shows the safety attachment with the means for operating the same, the plate normally covering the same being removed to fully show the working parts.

18 c *i 'mil to Fi 17 with 1 1g 15 a 1 on Si ar g the parts in a different position. 7

Fig. 19 is a section on line 1919 in Fig. 17

Fig. 20 is a side-view of the key employed in this detector.

Fig. 21 is a section on line 21-21 in Fig. 20.

Fig. 22 is a side-view of the guidepm, hollow spindle and cam.

Fig. 23 is an end view 01 the same parts.

24: is a section on line e4 2a in Fig. 2;. i

In Figs. 1 to 7, which show the attachment applied to the time-detector described in my Patent No. 13201 reissued February 7, 1911, A represents the casing of the timedetector in which a paper dial B is rotated by clock mechanism within the casing and marked by pricking, from time to time, by means of a series of diverse keys provided at various stations in the usual manner.

The cover C is hinged to the casing A and locked, when closed, by the means shown in Figs. 13 to 15 inclusive, which will be hereinafter described. The casing contains the clock mechanism while the cover contains the marking mechanism which is actuated by the keys.

The cover is provided with a bearing a in which one end oi a guide-sleeve Z) is rig idly held in line with the key-hole a? to receive the barrel D of the key shown in F 7. A. slide-plate e is guided in ways 0" upon the cover C to move parallel with the guide-sleeve, and carries a bracket 6 movable upon said sleeve.

A. spiral-spring is titted between the bearing a and bracket 6 to press the slideplate normally toward the key-hole. To one end of the slideplate is fastened a springplate f which extends parallel with the sleeve b and carrie at its free end a marking-pin f. V

The keys, as shown in Fig. 7, are formed with a hollow barrel D with a shoulder g next the shank D of the keys, the barrel having a bit or ward g at one side.

The keys for different stations are made with difierent lengths oi barrel from the shoulder 9 shown in Fig. 7, and the keyhole a is provided with a shoulder g which limits the movement of the barrel-key upon the guide-sleeve.

Such movement presses the bracket 6 and the slide-plate c inwardly, moving the marking-pin 7" more or less toward the center of the casing. To determine the time, each key has a barrel of predetermined length which differs from the barrels of the remaining keys, so that the indicating mark made by the use of each key may be identified by the position on the dial, to determine the time and station at which the clock was operated.

To provide a simple and eiii'ective means of preventing the use of any except the keys provided, I equip the detector with a stop flange 7&2 carried by a stop-plate h which is located'alongside of the sleeve 5, and mounted upon a shaft it, one end of which projects through the bearing a, and the other fitted to a socket 72, upon the cover. A spring it holds the stop-plate normally in the path of the ward 9 upon the key, such path and obstructing flange being shown in, Fig.3, the dotted line ;2 indicating the path of the ward. i

To actuate this obstructing stop flange 1 provide a stop shifter to engage a member within the barrel of the key, so that the rotation of the key may operate to rock the stop flange 72, upon its shaft it and turn the stop to clear the key-ward. The mechanism for this purpose consists, in the Moosinann detector, of a spindle fitted rotatively within the sleeve Z), and having an enlarged t -shaped flattened head 2' at the outer end of the sleeve, over which the key-barrel D is slid when inserting it in the lock.

Such head is flattened and the bottom of the barrel within the key is formed with a corresponding notch 1?. A cam i is attached to the opposite end of the spindle outside the bearing a, and operates upon an arm 2' which is rigidly attached to the shaft 75 of the stop flange. The cam is shown as a round block attached to the rear end of the spindle j, and flattened on one side against which the arm is pressed normally, by the action of the spring 71 upon the stop plate it.

The shoulder upon each key is formed in ll the keys for the different stations, at the same distance from the bottom of the barrel, where the notch 2' is formed, and when the keys are inserted with the key shoulder 9 against the key-hole shoulder g, the spindle is engaged with the interior of the key, and the rotation 01" the key turns the cam i and removes the stop flange h from the path of the key-ward, as shown in Fig. 4:, before such ward reaches the same.

The key can thus be turned without 0bstructio'n, to bring its bit or ward under the spring-plate f, and actuate the same as required. Fig. 5 shows the stop flange k in its normal position, standing in the path of the key-Ward g, which is shown in dotted lines in two positions in this figure for the purpose of illustration. The lower position agrees with the representation of the cam, whose flat side is in contact with the arm 2', and thus adapted, before the ward is turned to its upper position, to throw the stop flange outwardly to clear the ward.

Fig. 6 shows the arm 2" raised by the concentric side of the cam, thus throwing the stop flange k to one side, and permitting the Ward g to pass. The further rotation of the ward toward the spring f shown in Fig. 6, brings it into contact with the edge of the spring, thus bending it until the ward slips past it, when it recoils and perforates the paper dial, as desired. The distance of this perforation from the center of the dial indicates which key was used.

To doubly insure against the use of counterfeit keys, a guard lug k may be attached to the stop plate It to project in the path of the key ward, and thus arrest the key inde' pendently of the stop flange k Such arrest is effected by a shoulder 10 on the lower end of the guard-lug, which would arrest the key except it were provided with a notch is shown in Fig. 7, adapted to clear such shoulder.

As the key is moved past such shoulder it operates to force the lug outwardly,-as the latter is made with a sloping edge for that purpose.

Means is provided to prevent the key from rotating more than once for each insertion in the key-box (i, such means consisting of a wire spring Z having its free end movable in a slot Z formed in the bracket 6 below the spindle j, as shown in Figs. 3 and 4. The spring Z is fastened to one side of a block Z which. carries the spring plate f, and its free end projects through the bracket 0, at one side of the key ward, when inserted in the lock; and after its complete rotation the Ward encounters the spring and is compelled to push it to the opposite end of the slot Z before the key can be withdrawn from the key-hole.

The spring thus prevents any second rotation of the key in the lock.

Fig. 4 shows the ward g for illustration, in two positions. It will be understood that in this construction the spring Z and the bracket 6 move, together with the slide-plate c and thus retain their relation to one another.

Although Figs. 1 to 6 show two means of preventing the use of counterfeit keys, and thereby making the detector doubly safe, either device may be used alone.

Having shown the use of the attachment where only one marking die is employed, I now refer to Fig. 8, showing Hahns detector, employing a series of spring arms actuated by bits on a key.

To conform with this construction, the stop-flange b is on the under side of the shaft 71., and engages the free ends of the spring-arms m to prevent their movement unless a key is used having an internal notch i to engage the head of the spindle j. The cam i operates the arm 2" upon the shaft h, the same as in Fig. 1.

T o secure double safety in this device, I may, beside the cam connection, provide the stop-plate h with a projecting lug k which requires a special ward upon the key, to engage said lug, and push the stop-plate aside, as necessary, to remove the stop from the path of the spring-arms.

\Vith the construction of Fig. 8, a quarter turn of the key suffices to operate the cam i and lug I0 and in order to prevent the key from pressing the spring marking arms down farther than is necessary to impress the paper dial, I may construct the key-hole a as shown in Fig. 8, with a segmental recess n so shaped that a flange m upon the shank of the key, will strike the end a of said recess, and limit the key movement in the desired manner.

To prevent dust or dirt from collecting within the notch i in the key barrel, I provide the head of the key, as shown in Fig. 8 with a cavity 0, and connect the same with the notch by a hole or passage-way 0', so that the dust may escape to the cavity.

Figs. 13 to 15 show the attachment applied to the lock for securing the cover. This is of great importance, as the possibilty of opening the casing, and tampering with the marking mechanism, destroys the reliability of the whole detector. In this construction the lock-bolt c is attached to a slide 0 and is shifted by the bit g on the key, which is obstructed by a stop it. This sto is attached to a stop-plate it which is not inged, but made to slide on the lock-plate 0.

A stationary sleeve 11 is projected from the lock-plate to receive the key-barrel and spindle is fitted Within it and provided with a cam 71 upon the rear side of the loclcplate. The stop-plate is provided with a roll or disk 0 by means of a pin 0 extended through the lock-plate, and the cam operates upon the disk when the key is turned, to slide the stop-plate, and shift the stop out of the path of the key-ward. This construction makes the operation of the lock depend entirely upon the same member within the keybarrel which actuates the spindle that withdraws the stop from the path of the key.

Fig. 16 shows my safety attachment a plied to a detector using a band of paper Fl, carried upon the periphery of a wheel F. In this detector the operation of the stop to prevent the key-ward from actuating the markers at is fundamentally the same as that shown in Fig. 8.

This form of detector usually is constructed with the spindle projecting slightly outside the key-box. To prevent the possibility of a tool such as a pincers being used to turn the spindle and thus remove the stop from the path of the ward, I make the spindle hollow and mount it upon a stationary guide-pin, and groove the exterior of the hollow spindle to engage a rib within the barrel of the key. The header" the guidepin is enlarged sufiiciently to cover the outer end of the spindle and prevent a pincers from reaching the same to turn it.

In this construction the guide-pin is secured rigidly to a plate 79 which carries the marking mechanism. The hollow-spindle 7) having a cam upon one end next the plate p, is mounted to turn on the guide-pin j, and the head upon the outer end of the guide-pin prevents the hollow spindle from moving endwise. A stop 71 is mounted on a frame 2), said frame being operated by engagement with the cam the frame is movably held in position by a guide 79 which is secured to the plate p by suitable means; an outer plate p holds the guide and i'rame in working relation.

T he stop If carried on the frame is normally held in the path of the key-ward,

such path being indicated by dotted lines a in Figs. 17 and 18. A groove g is formed in the spindle to engage with a rib r inside the barrel of the key, the head of the guide pin also having a groove arranged to coincide with the groove in the spindle, to

permit the said rib to pass. W hen the key 7 is inserted in the key-box and in position for turning, it is turned in the direction of the arrow 3 (see Figs. 17 and 18), the cam then operates upon and moves the frame 32 thus carrying the stop from the path of the key-ward and permitting it to engage with the markers. lVhen the key is returned to its position for removal, the end .9 of the cam engages with the lug s on the frame, thereby returning the frame to its normal position and again bringing the stop in the path oi the key-ward.

A spring 71, operates upon the frame p to keep the various parts in snug relation to one another.

From the above disclosures it is obvious that my attachment can be applied to any form of detector in which a spindle and barrel-key are used. T he use of means within a key to operate a lock makes it almost impossible for a watchman to counterfeit the key as its exact mode of operation is not apparent, as in the keys commonly used. If anyone wished to imitate the keys used in my device it would be necessary for him to destroy one of the keys to learn the exact form of the engaging member within the barrel, and when taking into consideration the fact that all keys are securely fastened at the various stations, this expedient is well beyond his power.

A watchman may secure a key that to all appearances is the exact duplicate of the one usedin my device and he may use it and operate the detector without knowing that the markers have failed to register on the dial, and he thus leaves evidence of his deception in the record.

Having thus set forth the nature of the invention what is claimed herein is:

1. A lock having a spindle, a barrel-key fitted to the said spindle, a stop held movably in the path of the key-ward, an engaging member within the key-barrel, and means operated by such engaging member for moving the stop from the path of the key-ward.

2. A look having a stop held movably in the path of the key-ward, of a barrel-key fitted to the saidlock and having an engaging member within its barrel, and means connected with such stop to engage the member within the barrel of the key and move the stop out of the path of the said ward.

3. The combination, with a lock having a stop held movably in the path of the key ward, to impede the rotation of a key, of a series of keys fitted to the said lock and having each an engaging member within its barrel, and means in the lock adapted to be operated by the member within the key-ban rel and move the stop to clear the key-ward.

i. The combination, with a lock having a stop held movably in the path of the keyward, of a spindle adapted to receive a keybarrel and move the stop to clear the key ward, and a barrel-key having a member within its barrel adapted to operate upon the spindle to removethe stop.

5. In a watchmans time detector, the combination, with a lock having a movable spindle, and a barrel-key fitted to the said spindle, of a stop connected with the said spindle to obstruct the rotation of the key, and means within the barrel adapted to engage the spindle and operating to remove the stop from the path of the keyward.

6. In a watchmans time detector, the combination, with a lock having a sleeve held stationary therein, of a spindle movable concentric with the said sleeve, a stop connected with the spindle to obstruct the rotation of the key, and a key having means within its barrel adapted to engage the spindle and remove the stop from the path of the key ward.

7. In a watchmans time detector, the combination, with a lock having a sleeve held stationary therein, of a spindle movable within the said sleeve, and having a flattened head upon its outer end and a cam upon its inner end, a stop to obstruct the rotation of the key, an arm operated by the cam to move the stop, and a barrel-key having a member within the barrel for engaging the flattened head of the spindle to actuate the cam and remove the stop from the path of the keyward.

8. The combination with a lock having a series of diverse barrel-keys fitted to the said lock each having an engaging member within its barrel, a spindle held movably within the look, a stop arranged at one side of the spindle to obstruct the rotation of the key, and movable by the spindle, and a member within the barrel of each key adapted to engage the spindle and move the stop from the path of the key-ward.

9. The combination with a lock having a series of diverse barrel-keys provided with key-wards, of a spindle held movably within the look, a spring-actuated stop-plate holding a stop normally in the path of the keyward, with connections to the said spindle, and a member Within the barrel of each key adapted to engage the spindle and move the stop to clear the key-ward.

10. The combination, with a lock having a series of diverse barrelkeys provided with key-wards, of a key-spindle held movably within the look, a stop for the wards carried by a spring-actuated stop-plate with connections to the said spindle, and the keys being adapted to fit upon the spindle and having a member in the barrel of each key adapted to engage the spindle and move the said stop out of the path of the key-ward.

11. A look having a spindle, a series of diverse barrel-keys fitted to turn on the spindle, a bracket movable upon the spindle Y and having a transverse slot, a spring arranged to lie normally in one end of the slot and to engage with a keyward upon the complete rotation of the key, said ward carrying the spring to the opposite end of the slot, and preventing further rotary movement of the key.

12. A lock having a series of diverse barrelkeys provided with key-wards and having a notch within the end of the barrel, a spindle held movably within the lock and having a head adapted to engage the said notch, and a stop adapted to obstruct the rotation of the key, and having a connection to the said spindle operating when the key is turned to move the stop from the path of the key-ward.

13. A lock having a stop held movably in the path of the key-ward, a barrel-key having a lug within the side of the barrel, a stationary guide-pin with a reduced body and an enlarged head fitted to the barrel and having a groove to clear the said lug, and a hollow spindle rotatable upon the body of the guide-pin and having a notch in one side to engage the lug within the barrel, and having a connection to the stop to move the same from the path of the key-ward.

14. A look having a stop held movably in the path of the key-ward, a spindle adapted to receive a key-barrel and move the stop to clear the key-ward, and a barrel-key having a member within its barrel adapted to operate upon the spindle to remove the stop, and having a passageway extended from the inner end of the barrel for the escape of dust or foreign matter that may collect therein.

In testimony whereof I have hereunto set In hand.

y PAUL MOOSMANN. 

